What is a jump wire

SHOWA SEISEN manufactures jumper wires under the quality control system based on ISO 9001. JIS C 3101 (hard wire for electric wire) is used for the core wire used for the jumper wire. Then wire drawing, annealing and hot plating are applied.

Measurement of wire diameter

Measure the specimen about 200 mm in length with an outer micrometer in 0.001 mm increments. Measure two or more times at almost equal angles in the same coplanar plane and make the finished outside diameter as the average value of them.

Measurement of wire diameter by micrometer

Tensile test

Using a tensile tester, conduct a tensile test of the jumper wire. The tensile test is performed according to JIS C 3002-5.

Measurement of repeated bending strength

We take a specimen about 150 mm in length and measure with a bending test machine with a radius of curvature of 0.4 mm.
The bending strength of the jumper wire is measured by bending the specimen back to its original position, bending it 90 degrees in the opposite direction and restoring it as one cycle with one reciprocating motion and repeating until this is broken.

Plating Thickness Measurement

After measuring the finished outer diameter, remove the plating layer and measure the diameter of the core wire. Set the plating thickness to 1/2 of the difference between the finished outside diameter and core diameter. Also, if necessary, measure the plating thickness using the latest X-ray measuring instrument.

Fluorescent X-ray measuring instrument

Visual inspection

Visually check the surface of the jumper wire, check its appearance for defects and defects by touch. In the case of a bobbin-wrapped jumper wire, the jumper wire firmly wraps around the bobbin and confirms that the position of the end portion is easy to understand. Also, use the digital microscope (20 times to 200 times) as necessary to inspect the appearance.

Digital microscope

Number inspection

When shipping the jumper wire, after confirming the specified item and number, packing work will be carried out.

Number inspection by counting scale

Packing inspection

Wrap kraft paper around the surface of the jumper wire and pack it in a corrugated box case. Also, paste the label in an easily visible position. If there is concern about rust due to dew condensation due to export, vacuum packing will be carried out and shipping may be done in some cases.

Vacuum packing

In SHOWA SEISEN we are responding to various environmental surveys including RoHS directive and REACH regulations. In addition, we are using plating material (tin) that corresponds to lead-free, and we are making jumper wires with a manufacturing method with less environmental impact.

Lead-free solder

Lead is a substance harmful to the human body, but solder, which is an alloy of lead and tin, was used when mounting electronic parts on board. Lead-free solder that does not contain lead has been developed due to concern about the influence on the human body and the natural environment when being treated as waste. Even if it is lead-free, it is difficult to completely reduce the lead content to 0, so the following content ratios are specified for the RoHS directive and JIS Z 3282 (solder - chemical component and shape), respectively.

• RoHS Directive: content of 1000 ppm (0.1 wt%) or less
• JIS Z 3283: Content of 0.10% by mass or less

RoHS Directive

The RoHS (Abbreviation for Restriction of Hazardous Substances) Directive is a restriction on hazardous substances and is a directive that prohibits the use of certain harmful chemical substances in electrical and electronic products such as computers, communication equipment, home appliances and so on. Specific hazardous chemical substances subject to the RoHS Directive are lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl, and polybrominated diphenyl ether, each of which has a specified content rate. However, in the absence of alternative means of harmful chemical substances restricted by the RoHS Directive, it is exempted from application within certain limits. The RoHS Directive is enforced together with the WEEE (Waste Electrical and Electronic Equipment Department of Veterinary Department) directive, which is a command to promote the collection, recycling and collection of electrical and electronic equipment, and the RoHS Directive is enforced by the WEEE Directive on waste electric and electronic equipment It aims to make it easy to collect, recycle and recover, and ultimately do not affect the human body or the environment when landfilling or incineration disposal.less

REACH Regulation

REACH (Abbreviation for Registration, Evaluation, Authorization and Restriction of Chemicals) is a regulation aimed at comprehensive registration, evaluation, permission and restriction of chemical substances in Europe. Chemical substances covered under the REACH regulation are called substances of high concern (SVHC) and are considered substances that can cause extremely high concern for the environment and the human body. By regulating these, it is possible to ensure safety from chemical substances that are highly concerned about hazards.

JAMP AIS

JAMP AIS is a chemical substance information sheet (Article Information Sheet) issued by Joint Article Management Promotion-consortium (JAMP). JAMP AIS is an information transmission sheet for conveying information on chemical substances contained in products recommended by JAMP. In 2007 REACH regulations were enacted in the EU and it became required for the information on inclusion of candidate substances (SVHC) to be approved in the product to be transmitted through the supply chain, so JAMP molded based on MSDSplus information Information on chemical substances contained in products is converted to AIS and transmitted.

Conflict minerals

Conflict Metal is a mineral resource excavated in conflict areas such as Africa. Although conflict minerals are valuable foreign currency-harvesting resources for producing countries, it is pointed out that there are aspects that prolong the civil war etc. as a source of funds for armed groups, causing aspects of human rights violations.

Therefore, the Electronics Industry Citizenship Coalition (EICC) and the Global e - Sustainability Initiative (GeSI) issue a conflict mineral investigation form to clarify the use and non - use of 4 metals (gold, tin, tungsten, tantalum) and their refineries. This is to the US Securities and Exchange Commission (SEC) on the use of conflict minerals to companies listed on the US in the US Financial Regulatory Reform Act Article 1502 Dodd-Frank Wall Street Reform and Consumer Protection Act It is obligatory that reporting is obligatory.

SHOWA SEISEN, we are handling the latest environmental survey certificate and data submission on jumper wires.

A wire is a single, usually cylindrical, flexible strand or rod of metal. Wires are used to bear mechanical loads or electricity and telecommunications signals.

A jump wire is an electrical wire or group of them in a cable with a connector or pin at each end. Wires are used to connect components to each other on the breadboard or other prototypes, internally or with other equipment or components, without soldering.

Jumper Wires

Wire connectors could be male or female.

A male connector is commonly referred to as a plug and has a solid pin for a center conductor.

A female connector is commonly referred to as a jack and has a center conductor with a hole in it to accept the male pin.

To build your breadboard version you will need a few male to male jumper cables.

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Led Emitting Diode - LED is a particular type of diode that converts electrical energy into light. LED illuminates when electricity passes through it. Like all diodes, electricity only flows in one direction through these components. The anode, which typically connects to power is usually longer leg and the cathode is the shorter leg.

When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.

LEDs

Types of LEDs:

• RGB LEDs
• Flash LEDs
• SMD LEDs
• High-Power LEDs
• Infrared LEDs
• Ultraviolet LEDs

Our focus here will be RGB LEDs.

RGB (Red-Green-Blue) LEDs are actually three LEDs in one. But that doesn’t mean it can only make three colors. Because red, green, and blue are the additive primary colors, you can control the intensity of each to create every color of the rainbow. RGB LED products combine these three colors to produce over 16 million hues of light. Note that not all colors are possible. Some colors are “outside” the triangle formed by the RGB LEDs. Also, pigment colors such as brown or pink are difficult to achieve.
Most RGB LEDs have four pins: one for each color and a common pin (the longest pin).

RGB LED

To build your air device we recommend RGB LED ring.

RGB LED ring

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